AlJames What else can I try?
Your problem, as I think I may have said, is not caused by the l;ow water detection system, but the failure of the pump to fill the tank and you are getting a pump timeout alarm. This is common on most programming of espresso machines.
Depending on the specific design to fill the tank…solenoids, one way valves…there is either:
- A blockage
- A piece of debris, causing some failure of any solenoid or valve
- A solenoid failure if the solenoid has to be pulled in when the pump runs to open a valve, so the boiler can fill. If the machine can be plumbed or tanked, it makes sense to have the solenoid not be permanently energised when plumbed.
If there is a solenoid that needs to “pull in” when the pump runs, then that would be one area that’s favourite for the problem.
Your picture is so close, it’s hard to make out how it’s designed to work….I will try and see if there are suitable shots of the internals on the web…..